Unable to call JavaScript in onintialized, new Exception about not being allowed to call JS in static mode

[vsfeedback]

This issue has been moved from a ticket on Developer Community.

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[severity:It bothers me. A fix would be nice] [regression]
After upgrading to Visual Studio version 10 I had Blazor apps fail when they ran ok on version 9. I would get an exception that jsruntime can't be called in oninitialized as it is in static mode and you can't use it until after render. In version 9 I could call Javascript to get info about the client browser for language, nationality and size. I used this info in the rendering mode. Now I have to get the info after render and re-render.

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Original Comments

Feedback Bot on 12/9/2025, 10:00 AM:

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